Issue 72, 2018

Surprisingly selective sulfate extraction by a simple monofunctional di(imino)guanidinium micelle-forming anion receptor

Abstract

We report a novel di(imino)guanidinium anion extractant with unparalleled selectivity for sulfate in a liquid–liquid separation system. In addition to a 4.4 order-of-magnitude enhancement in affinity compared to a standard benchmark, our alkylated di(imino)guanidinium receptor is economically synthesized and features good compatibility with application-relevant aliphatic solvents. Small-angle X-ray scattering results reveal the formation of reverse-micelles, which together with the significant organic-phase water content challenge traditional notions of selectivity in extraction of superhydrophilic anions.

Graphical abstract: Surprisingly selective sulfate extraction by a simple monofunctional di(imino)guanidinium micelle-forming anion receptor

Supplementary files

Article information

Article type
Communication
Submitted
26 Jun 2018
Accepted
13 Aug 2018
First published
20 Aug 2018

Chem. Commun., 2018,54, 10048-10051

Author version available

Surprisingly selective sulfate extraction by a simple monofunctional di(imino)guanidinium micelle-forming anion receptor

N. J. Williams, C. A. Seipp, K. A. Garrabrant, R. Custelcean, E. Holguin, J. K. Keum, R. J. Ellis and B. A. Moyer, Chem. Commun., 2018, 54, 10048 DOI: 10.1039/C8CC05115A

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